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(#) Wear: Disabling Back navigation

!!! WARNING: Wear: Disabling Back navigation
   This is a warning.

Id
:   `WearBackNavigation`
Summary
:   Wear: Disabling Back navigation
Severity
:   Warning
Category
:   Usability
Platform
:   Android
Vendor
:   Android Open Source Project
Feedback
:   https://issuetracker.google.com/issues/new?component=192708
Since
:   8.2.0 (November 2023)
Affects
:   Resource files
Editing
:   This check runs on the fly in the IDE editor
See
:   https://developer.android.com/training/wearables/views/exit#disabling-swipe-to-dismiss
Implementation
:   [Source Code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-checks/src/main/java/com/android/tools/lint/checks/WearBackNavigationDetector.kt)
Tests
:   [Source Code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/WearBackNavigationDetectorTest.kt)

Disabling swipe-to-dismiss is generally not recommended for Wear
applications because the user expects to dismiss any screen with a
swipe. If your activity does not require swipe-to-dismiss to be
disabled, the recommendation is to remove the
`android:windowSwipeToDismiss` attribute from your theme declaration.

!!! Tip
   This lint check has an associated quickfix available in the IDE.

(##) Example

Here is an example of lint warnings produced by this check:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~text
res/values/styles.xml:10:Warning: Disabling swipe-to-dismiss is
generally not recommended for Wear applications [WearBackNavigation]
    &lt;item name="android:windowSwipeToDismiss"&gt;false&lt;/item&gt;
    ------------------------------------------------------
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Here are the relevant source files:

`src/AndroidManifest.xml`:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~xml linenumbers
&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="test.pkg"&gt;
     &lt;uses-sdk android:minSdkVersion="30" /&gt;
     &lt;uses-feature android:name="android.hardware.type.watch" /&gt;
    &lt;application
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"&gt;
        &lt;activity android:name=".MainActivity"
            android:theme="@style/AppTheme" /&gt;
    &lt;/application&gt;
&lt;/manifest&gt;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

`res/values/styles.xml`:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~xml linenumbers
 &lt;resources&gt;

   &lt;style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar"&gt;
       &lt;item name="colorPrimary"&gt;@color/colorPrimary&lt;/item&gt;
       &lt;item name="colorAccent"&gt;@color/colorAccent&lt;/item&gt;
       &lt;item name="android:windowSwipeToDismiss"&gt;true&lt;/item&gt;
   &lt;/style&gt;

   &lt;style name="SubTheme" parent="AppTheme"&gt;
       &lt;item name="android:windowSwipeToDismiss"&gt;false&lt;/item&gt;
   &lt;/style&gt;

&lt;/resources&gt;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

You can also visit the
[source code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/WearBackNavigationDetectorTest.kt)
for the unit tests for this check to see additional scenarios.

(##) Suppressing

You can suppress false positives using one of the following mechanisms:

* Adding the suppression attribute `tools:ignore="WearBackNavigation"`
  on the problematic XML element (or one of its enclosing elements).
  You may also need to add the following namespace declaration on the
  root element in the XML file if it's not already there:
  `xmlns:tools="http://schemas.android.com/tools"`.

  ```xml
  &lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;item xmlns:tools="http://schemas.android.com/tools"
      tools:ignore="WearBackNavigation" ...&gt;
    ...
  &lt;/item&gt;
  ```

* Using a special `lint.xml` file in the source tree which turns off
  the check in that folder and any sub folder. A simple file might look
  like this:
  ```xml
  &lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;lint&gt;
      &lt;issue id="WearBackNavigation" severity="ignore" /&gt;
  &lt;/lint&gt;
  ```
  Instead of `ignore` you can also change the severity here, for
  example from `error` to `warning`. You can find additional
  documentation on how to filter issues by path, regular expression and
  so on
  [here](https://googlesamples.github.io/android-custom-lint-rules/usage/lintxml.md.html).

* In Gradle projects, using the DSL syntax to configure lint. For
  example, you can use something like
  ```gradle
  lintOptions {
      disable 'WearBackNavigation'
  }
  ```
  In Android projects this should be nested inside an `android { }`
  block.

* For manual invocations of `lint`, using the `--ignore` flag:
  ```
  $ lint --ignore WearBackNavigation ...`
  ```

* Last, but not least, using baselines, as discussed
  [here](https://googlesamples.github.io/android-custom-lint-rules/usage/baselines.md.html).

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